CN204912809U - Preceding holder of boring head that takes precautions against earthquakes and swing - Google Patents
Preceding holder of boring head that takes precautions against earthquakes and swing Download PDFInfo
- Publication number
- CN204912809U CN204912809U CN201520579633.2U CN201520579633U CN204912809U CN 204912809 U CN204912809 U CN 204912809U CN 201520579633 U CN201520579633 U CN 201520579633U CN 204912809 U CN204912809 U CN 204912809U
- Authority
- CN
- China
- Prior art keywords
- roller
- support body
- fore
- hole
- boring head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model provides a preceding holder of boring head that takes precautions against earthquakes and swing, a roller terminal surface still is provided with the fore -set, the fore -set is the solid column body, and during one end was absorbed in the fore -set groove in the support body, the other end supported an end face centre at the roller, still sets up the separation blade between two adjacent roller hole, and separation blade length is greater than the length of cambered surface between the two adjacent roller hole. Preceding holder of boring head that takes precautions against earthquakes and swing, has solved the roller and overhaul to have changed must to dismantle and fall the problem that the dabber was changed ab intra, the roller can outwards not deviate from along with the dabber pivoted time, needs to overhaul with changing when, removes the separation blade and can outwards pour the roller, has simplified the process of overhauing the change roller, has saved the operating time of maintenance, simultaneously set up the fore -set on the roller receives the orientation of frictional force, avoided roller and roller hole's inner wall to collide with each other, damage glossy roller surface, the life of holder before shortening, the holder is to the circumstances that rolls polishing effect of pipe inner wall before the influence.
Description
Technical field
The utility model relates to mechanical manufacturing field, is specially retainer before a kind of antihunt boring head.
Background technology
The front retainer that general boring head uses is all the roller rolling retainer for polishing tube blank inner wall, after use after a while, needs to overhaul it, occurs that the roller damaged needs to change.But the mounting means of roller is not easy to maintenance and changes very much on existing boring head.On the support body of front retainer, normally offer outer little interior tapered roller hole greatly, support body outside opening area is less than roller vertical section and amasss, first the mandrel of boring head is pulled down during installation, roller is put into inside tapered roller hole, be set in again on mandrel, eject roller by mandrel from inside, make a roller part protrude tapered roller hole, rotate along with the rotation of mandrel during work, polishing is carried out to tube blank inner wall.If need to overhaul roller or change in the use procedure of boring head, need first whole boring head to be pulled down from lathe, then disassemble mandrel and retainer, then take out the roller damaged from the inner side of retainer, whole operation very loaded down with trivial details.
Front retainer on boring head is when drive roller rotates, be subject to from tube blank inner wall one frictional force backward, tolerance is there is between roller hole and roller, when the rotation of mandrel is enough fast time, roller can shake in roller hole, and this concussion can cause the inwall of roller and roller hole mutually to collide with, and damages smooth roller surface, thus service life of retainer before shortening, before impact, retainer rolls polishing effect to tube blank inner wall.
Utility model content
The purpose of this utility model is to provide retainer before a kind of boring head of vibration proof, by changing the setting of roller hole, matching used catch does not hinder the normal work of roller while roller is not deviate from blocking, solve the problem that dismounting roller first must dismantle mandrel, fore-set is set in the opposite direction of roller direct of travel simultaneously, guarantee that roller can stable operation when High Rotation Speed, namely simplify the overhaul procedure of retainer before boring head, ensure that front retainer stable operation simultaneously.
In order to the inconvenient examine and replace of the roller on retainer before solving boring head and the problem easily producing concussion when rotating, technical solution adopted in the utility model is:
Retainer before a kind of antihunt boring head, comprise being sheathed on mandrel and there is certain thickness circular support body, be arranged on the roller hole and roller that distribute for axle center is centrosymmetric on support body and with its center of circle, described roller hole is the rectangular through-hole be opened on support body, described roller is the cylinder be arranged in roller hole, the diameter length of roller is less than roller hole width and is greater than the thickness of support body, also fore-set is provided with between roller one end face and support body, described fore-set is solid cylindrical body, one end is absorbed in the fore-set groove in support body, the other end is against in the middle part of the end face of roller, between adjacent two roller holes, also catch is set, catch length is greater than the length of cambered surface between adjacent two roller holes, be fastened by bolts on support body in the middle of it, two ends outwards tilt along roller, tilt the peak of height lower than roller exterior arc surface.
Described catch is rectangular, rectangle catch all extends outward projection near the corner of roller, height of projection is lower than the peak of roller exterior arc surface, height of projection is lower than the peak of roller exterior arc surface, rectangle catch is inconvenient to adjust the height tilted in use, the projection of catch corner extension then better can regulate the height of projection, if highly improper, sharp-crested tweezers can be used to adjust.
Described roller side and upper bottom surface coupling part are that cambered surface is arranged, the roller edge that cambered surface is arranged, and make roller there will not be cut when carrying out compacting polishing to pipe sidewall, effectively can improve the quality of compacting polishing.
Compared with prior art, the utility model has following beneficial effect:
Retainer before the antihunt boring head of one described in the utility model, by roller hole on front retainer is changed to the consistent rectangular opening of upper and lower opening from outer little interior large coniform hole, solve roller examine and replace and must disassemble the problem that mandrel changes from inside, by rectangular opening and catch with the use of, roller can not outwards be deviate from when rotating with mandrel, when needing maintenance and change, remove catch roller outwards to be poured out, simplify the operation of examine and replace roller, save the working time of maintenance, fore-set is set on the direction of roller by frictional force simultaneously, one end of fore-set is embedded on the support body of front retainer, the other end withstands on roller, make roller when rotating with mandrel, can not shake, the inwall avoiding roller and roller hole collides with mutually, damage smooth roller surface, thus shorten the service life of front retainer, before impact, retainer is to the situation rolling polishing effect of tube blank inner wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of retainer before a kind of antihunt boring head of the utility model;
Fig. 2 is the roller mounting means schematic diagram of retainer before a kind of antihunt boring head of the utility model;
Mark in figure: 1, support body, 2, roller hole, 3, roller, 4, catch, 5, bolt, 6, mandrel, 7, fore-set.
Detailed description of the invention
Below in conjunction with accompanying drawing, by detailed description of the invention, the utility model is further described.
As shown in the figure, retainer before a kind of antihunt boring head of the utility model, comprise being sheathed on mandrel 6 and there is certain thickness circular support body 1, be arranged on the roller hole 2 and roller 3 that distribute for axle center is centrosymmetric on support body 1 and with its center of circle, it is characterized in that: described roller hole 2 is for being opened in the rectangular through-hole on support body 1, described roller 3 is for being arranged at the cylinder in roller hole 2, the diameter length of roller 3 is less than roller hole 2 width and is greater than the thickness of support body 1, roller 3 one end face is also provided with fore-set 7, described fore-set 7 is solid cylindrical body, one end is absorbed in the fore-set groove in support body 1, the other end is against an end face center of roller 3, between adjacent two roller holes 2, catch 4 is also set, catch 4 length is greater than the length of cambered surface between adjacent two roller holes 2, be fastened on support body 1 by bolt 5 in the middle of it, two ends outwards tilt along roller 3, tilt the peak of height lower than roller 3 exterior arc surface.
Roller 3 on support body 1 along with mandrel 6 rotate time, direct of travel is towards the hand of cutter of mandrel 6, the frictional force from tube blank inner wall now suffered by roller 3 is contrary with direct of travel, fore-set 7 is arranged on roller 3 end face with direction, ensure that roller 3 there will not be concussion when High Rotation Speed.
In the process that boring head uses, the catch 4 that support body 1 outer is fixed guarantees that roller 3 can not drop out ball hole 2, needs the bolt 5 dismantling lower fixing catch 4 when carrying out examine and replace to roller 3, roller 3 can be poured out.
Described catch 4 is rectangular, rectangle catch 4 all extends outward projection near the corner of roller 3, height of projection is lower than the peak of roller 3 exterior arc surface, rectangle catch is inconvenient to adjust the height tilted in use, the projection of catch corner extension then better can regulate the height of projection, if highly improper, sharp-crested tweezers can be used to adjust.
Described roller 3 side and upper bottom surface coupling part are that cambered surface is arranged, the roller edge that cambered surface is arranged, and make roller there will not be cut when carrying out compacting polishing to pipe sidewall, effectively can improve the quality of compacting polishing.
Claims (3)
1. retainer before an antihunt boring head, comprise being sheathed on mandrel (6) and there is certain thickness circular support body (1), be arranged on roller hole (2) and roller (3) that support body (1) above and with its center of circle distributes for axle center is centrosymmetric, it is characterized in that: described roller hole (2) is for being opened in the rectangular through-hole on support body (1), described roller (3) is for being arranged at the cylinder in roller hole (2), the diameter length of roller (3) is less than roller hole (2) width and is greater than the thickness of support body (1), fore-set (7) is also provided with between roller (3) end face and support body (1), described fore-set (7) is solid cylindrical body, one end is absorbed in the fore-set groove in support body (1), the other end is against in the middle part of the end face of roller (3), between adjacent two roller holes (2), catch (4) is also set, catch (4) length is greater than the length of cambered surface between adjacent two roller holes (2), be fastened on support body (1) by bolt (5) in the middle of it, two ends outwards tilt along roller (3), tilt the peak of height lower than roller (3) exterior arc surface.
2. retainer before a kind of antihunt boring head as claimed in claim 1, it is characterized in that: described catch (4) is rectangular, rectangle catch (4) all extends outward projection near the corner of roller (3), and height of projection is lower than the peak of roller (3) exterior arc surface.
3. retainer before a kind of antihunt boring head as claimed in claim 1, is characterized in that: described roller (3) side and upper bottom surface coupling part are that cambered surface is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579633.2U CN204912809U (en) | 2015-08-05 | 2015-08-05 | Preceding holder of boring head that takes precautions against earthquakes and swing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579633.2U CN204912809U (en) | 2015-08-05 | 2015-08-05 | Preceding holder of boring head that takes precautions against earthquakes and swing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204912809U true CN204912809U (en) | 2015-12-30 |
Family
ID=54961993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520579633.2U Expired - Fee Related CN204912809U (en) | 2015-08-05 | 2015-08-05 | Preceding holder of boring head that takes precautions against earthquakes and swing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204912809U (en) |
-
2015
- 2015-08-05 CN CN201520579633.2U patent/CN204912809U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160805 |